常用jar包下载地址

struts:    http://www.apache.org/dist
Struts 2 : http://struts.apache.org/download.cgi#struts216
spring : http://www.springsource.org/download
hibernate :  https://www.hibernate.org/6.html
Maven 中央仓库地址：
1. http://www.sonatype.org/nexus/
2. http://mvnrepository.com/
3,http://repo1.maven.org/maven2/
4,http://repository.jboss.com/maven2/
5,http://repository.sonatype.org/content/groups/public/
6,http://mirrors.ibiblio.org/pub/mirrors/maven2/org/acegisecurity/
7，http://maven.aliyun.com/nexus/content/groups/public/